A farmer who grows blackberries has found his harvest to be lower than usual. He

Question

A farmer who grows blackberries has found his harvest to be lower than usual. He suspects that some animals are eating the berries before he can pick them. The farmer thinks it may be either birds (landing on the bushes to feast on berries) or rodents (climbing the bushes from below to munch on berries). He decides to first test the hypothesis that birds are eating his berries, and consults with a local bushes in each field. In one of his fields (depicted below, as viewed from above), he covers half of the rows with nets that will prevent birds from landing on the bushes, and he leaves the other half uncovered. Over the course of 8 weeks, he counts the berries harvested from each row of bushes in the test field.

Explanation / Answer

Ans.1 independent variable is the thing that you are testing and the scientist can change this variable during the experience. It is the cause factor.

Dependent variable is the thing that you are measuring or observing. It is the effect factor.

So, in the above hypothesis the independent variable is the presence and absence of nets and dependent variable is number of berries harvested. Because presence/absence of nets is the cause which effecting the number of berries being harvested.

2. The units of this experiment is the blackberry bushes because the experimental units are the entities to which the treatment is applied and in this experiment the treatment is applied on blackberry bushes.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.